In order to use dynamic DNS in our installation, we used to
pass a workstations hostname with the "-h hostname" option
to dhcpcd in the 5.2 "ifup" script.

pump does not appear to take that as a valid option.

This is critical, as the hostname argument gets sent with
the dhcp request, and our dhcp server updates DNS with said
received name.

Please advise... and this is a pretty critical thing to
simply replace on an upgrade...  Not too cool... please
don't ever become evil.